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Study on vertical transmission and its mechanism of transfusion transmitted virus

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Author:
No author available
Journal Title:
CHINESE JOURNAL OF PERINATAL MEDICINE
Issue:
2
DOI:
10.3760/cma.j.issn.1007-9408.2007.02.005
Key Word:
输血传播病毒;DNA病毒感染;疾病传播,垂直;原位杂交

Abstract: 目的 探讨输血传播病毒(transfusion transmitted virus, TTV)母婴垂直传播的途径和可能机制. 方法 采用地高辛标记探针,对36例产妇胎盘组织TTV DNA进行原位杂交定位检测.根据孕妇静脉血和胎儿脐血TTV DNA检测结果,将其胎盘组织标本分为以下三组:A组为两者均阳性12例;B组为孕妇阳性、胎儿阴性12例;C组为两者均阴性12例. 结果 TTV DNA阳性杂交信号呈蓝紫色团块状或颗粒状,位于感染细胞的细胞核内,偶见于细胞浆内.在36份胎盘组织标本中共有13份TTV DNA呈阳性,阳性率为36.1%.其中A组TTV DNA阳性8例(8/12),B组TTV DNA阳性5例(5/12),C组未检出TTV DNA. 结论 TTV可通过胎盘组织垂直传播进入胎儿血液,其传播机制属细胞源性母婴垂直传播.

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